Boring-machine.



sa e GLE, of ains linois.

"Bonnie-Machine. Y r

Specification of Letters Patent.

Patented Get. -18, 1910.

Application filed Min 5, 1909. Serial No. A 81,283.

To all whom it may concern:

- and in the accompanying drawings the dea top plan view.

vice has been exaggerated in size to more clearly bring out the details of construction.

The invention consists of a frame provided with a drilling shaft, :1 drive shaft at.

right angles to the drill shaft, and an ad justable gage carried by the "frame and drive shaft.

The invention also consists in the n vol features of construction hereinafter set'forth, pointed out in the claims and shown in the accompanying drawings, in which:

Figure 1 is a side elevation staining the device in operation. Fig. 2 is an end view of the device looking toward the gage. Fig.

Fig. leis a detail sectional view illustrating the nninn'er of l()t.'l-

ing the drill to the drill shaft.

,iramo formed of l'lat metal bars and pro-- vidcd adjacent an open end with a cross oar 2. A drive shaft 3 is loosely journaled in the cross bar and in the op iiosite end of the frame 1 and carries at its inner end a beveled g'cnr l, the hub t") of which rests upon the rules bar A hollow drill shalit ti jonn nalcd in the sides oi? the open end of the 'lramo and has fixed upon it. a beveled gear wheel 7 which meshes with the beveled gear 4-. sleeve 8 is fitted upon the outer end of the shaft 3 and a set screw works through said sleeve and through the shaft and locks bar ll, the body portion of which is pa allcl to a side of the'lramc 1, and which is provided with an angled end portion ll through which the drive shaft 3 loosely passes. Abracket- 12 carried by the frame.

l is provided with a threaded pin l3 which extends through a longitudinal slot 1% formed in the gage 11, and the gage is locked in its adjusted position by a wing nut-.15. A

-roller 16 is mounted in the iirce bifurcated end of the gage 11 and travels upon the un-' dcr side ofthe car floor as the drill enters the sill. A suitable scale is laid ofif upon the gage 11 adjacent the slot 1% and by adjusting the so as to move thescale relative to the pin 13 and then tighten the nut- 15, the device may be adjusted so that when the roller engages the under side of the car floor, the drill will enter the sill in a ho 'izontal line at a prealetermined point.

tVhat I claim is:

1. A device oi the liind described comprising a frame, drill holding means ar: ranged adjacent one end of the 'lrame and transverse thereto, an operating shaft journaled longitudinally in the frame and being provided with a crank portion adj. rent the end of the frame opposite the drill holding means, n'ieans for transmitting rotary motion of the said shaft to the drill holding; means, a gage consisting of an angled bar arranged parallel to and outside of the frame, one end of said bar being loosely mounted upon the said shaft, the other end projecting beyond and at right angles to the drill holding means, and means carried hy the frame for snpporting the last men tioned end portion of said 2. A device of the hind described comprising a frame, drilling mechanism carried thert 3, a drill working at right. angles to the frame, a bar parallel toand extending beyond the ends oi the Frame, said her being slotted adjacent one end an angled adjaccntthe other end, the angled portion working loosely upon a shaft of the tllllllnf i mechanism, a roller carried by the slotted end, a pin carried by the frame and extending intothc slot, and a wing nut: working upon said pin, as and for the purpose set forth.

3. A. device ol the kind described comprisinn a frame, a drill shaft. versclv by the ironic. a drive shaft. carried by the trance at right angles to th drill shaft passing shaft, intermeshing shafts, a gage arranged parallel to the i'rmne, one end 011 the gage being slotted, and. the other end being angled, a drive loosely through the angled portion, a roller carried by the slotted end portion, a pm earned by the frame and exgears carried by said 

